CN104963688B - Prevention and control method for falling of pumice at roof and two slopes of stope in medium-long hole mining - Google Patents
Prevention and control method for falling of pumice at roof and two slopes of stope in medium-long hole mining Download PDFInfo
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- CN104963688B CN104963688B CN201510302693.4A CN201510302693A CN104963688B CN 104963688 B CN104963688 B CN 104963688B CN 201510302693 A CN201510302693 A CN 201510302693A CN 104963688 B CN104963688 B CN 104963688B
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Abstract
The invention relates to a prevention and control method for falling of pumice at the roof and two slopes of a stope in medium-long hole mining. According to the invention, a protection air bag is installed at a central-and-upper position of a subsection; high pressure wind is injected into the protection air bag through a pressure ventilation pipeline in the stope so as to allow the wall of the air bag to extrude rock, so falling of loose ore blocks at the two slopes is prevented and ore blocks falling from the roof are prevented from directly falling into a bottom cleaning work zone of the subsection; thus, operation safety in the subsection is guaranteed.
Description
Technical field
The present invention relates to a kind of Pumex inbreak prevention of underground mine stope and control method.
Background technology
Domestic metal mine is all being actively introduced inexpensive, efficient oper cylinler Longhole Mining method at present.Pushing away
The greatest problem running in wide application process is, because stope sky is risen, two help and upper disk Pumex cannot examine sled it is difficult to ensure to adopt
Job safety in, especially in the operation such as the clear bottom of stope and stope bottom application work, potential safety hazard is bigger.With reference to external warp
Test, indivedual large-scale mines have introduced remote-controlled scraper, the safety of operator during basic guarantee ore removal, but equipment safety cannot
Ensure；In addition, when constructing stope bottom, need operating personnel's entrance stope to carry out reinforcing bar and lay and bundle work,
Need to be fully exposed under goaf, safety it is difficult to ensure that.
Content of the invention
The technical problem to be solved is to provide a kind of Medium-long hole mining method Stope roof and two and helps Pumex inbreak
Prevention and control method,
Technical scheme is as follows:
Medium-long hole mining method Stope roof and two help Pumex inbreak prevention and control method it is characterised in that: cutting adopt connection
And cutting adopt connection internal cutting return air raise engineering terminate after, cutting is adopted connection carry out wall caving bear down on one trapezoidal, bear down on one end after, enter
The cementing slurry placement of row simultaneously connects the trapezoidal article points ore removal dam body of top formation；Wear arteries and veins along ore removal to constructing one or several ore removal edge both sides
Arteries and veins to trapezoidal article points ore removal dam body and with cut return air raise insertion；Lane is cut in construction rock drilling, and carries out the back production preparation of trapezoidal article points
And stoping operation；Trapezoidal stripping recovery carries out filling after terminating, and then carries out the continuous stoping of Inclined strips；Through adopting, cut
After journey construction, goaf across pitch section is parallelogram, a width of trapezoidal article points thickness, a height of trapezoidal article points height, mined out
Area's capwise section is parallelogram, a width of orebody thickness, a height of trapezoidal article points height；Protective air-bag is now set；Institute
State protective air-bag to be fully contacted with Inclined strips upper lower burrs, protective air-bag length is close to ore body width, protective air-bag height and width
Degree is equivalently-sized；Described protective air-bag is shaped as the slightly wider cuboid in top, point inside and outside two layers, and outer layer is capsule overcoat,
Internal layer is to store gas inner bag, and capsule overcoat is consistent with storing gas inner bag shape, stores gas inner bag surface area and is slightly larger than capsule overcoat；?
The pressure wind gas tube with pressure air valve is installed in the upper end of protective air-bag, and the inner of pressure wind gas tube communicates with storing gas inner bag；Anti-
The hanging rope hook being separately installed with four drift angles of shield air bag, described hanging rope hook hangs on the anchor-rod tray of article points roofbolt
On, it is separately installed with the regulation drawstring for adjusting balloon positions at lower end four base angle of protective air-bag；Wind gas tube will be pressed
Outer end is connected with pipeline of calming the anger, and opens the pressure air valve on pressure wind gas tube, intrinsic pressure using stope rock drilling pressure wind direction protective air-bag
Gas；Air bag is full of calms the anger, and after scraper prune job area is formed with effective protection, carries out including scraper ore removal and bottom reinforced-bar binding
In interior stope prune job.
The lower end of protective air-bag is provided with the drain pipe of drain valve；Into protective air-bag, the inflation initial stage opens on drain pipe
Drain valve, close this drain valve after water base emptying.
When carrying out stope prune job, pressure air valve is in normally open.
Storing, flexible limit for length's drawstring is installed inside gas inner bag along its length, in order to for ensureing that protective air-bag is shaped as approximately
Cuboid.
The positive effect of the present invention is:
Firstth, Stope roof Pumex falls after coming off on protective air-bag without falling into scraper prune job area, prevents simultaneously
Shield air bag both sides contact squeeze is on Inclined strips upper lower burrs wall, it is to avoid what Pumex helped by upper disk and two comes off it is ensured that scraper
The safety of the stope prune job such as ore removal and bottom reinforced-bar binding.
Secondth, do not need, by expensive remote-controlled scraper ore removal, therefore significantly to drop using the method for the present invention
Low Ore puts into and mining cost.
3rd, the protective air-bag mounting process of the present invention is simple, can play protection using after stope rock drilling pressure wind inflation
Effect, and only need to consume part rock drilling pressure wind, protection expense is extremely low.Protective air-bag can reclaim reuse.
Brief description:
Fig. 1 is mounting structure and the using method schematic diagram of the present invention.
Specific embodiment
Further illustrate the present invention with reference to the accompanying drawings and examples.
First, adopt, cut journey:
As Fig. 1, when carrying out whole piece (or certain section) mineral ore and adopting quasi- work arrangement, the vertical orebody trend of stope is arranged.
Adopt connection (enter ore body section and referred to as cut through arteries and veins) cutting of constructing in the arrangement cutting of stope both wings vertical orebody trend
Return air raise 12 is to top tailgate.
Lay out ore mining connection (enter ore body section referred to as ore removal and wear arteries and veins) in stope central vertical orebody trend, wear arteries and veins along ore removal
Along the pulse cut return air raise 12 insertion to both sides construction ore removal and with both wings.
Stoping sequence is from two flapwise central authorities ore removals, adopts connection drawing back.
Connection is adopted in cutting and cutting is adopted after connection internal cutting return air raise 12 engineering terminates, and cutting is adopted with connection carries out wall caving to bear down on one and be in
Trapezoidal, after end of bearing down on one, carry out the cementing slurry placement of high mixture ratio and connect the trapezoidal article points ore removal dam body 11 of top formation.
Along ore removal wear arteries and veins to both sides construct one or several ore removal along the pulse to trapezoidal article points ore removal dam body 11 and with cut return air
Courtyard 12 insertion.
Lane is cut in the rock drilling of constructing respectively in trapezoidal article points 13 ore removal dam body 11 both sides, and carries out the back production of trapezoidal article points 13 and prepare
And stoping operation.The stoping operation order of trapezoidal article points 13 is: rock drilling is cut lane construction, concentrated rock drilling, blasting in groups ore removal and top
Slab supporting, stope cleaning etc., finally carry out stope closing filling.
Wherein, during central stripping recovery, drift section is trapezoidal, and tunnel and cutting return air raise are constructed after terminating, and carry out
Top tight filling, during the ore body back production of top Ore along trapezoidal obturator two sides landing it is achieved that fixed point, safe ore removal.Trapezoidal filling
Body as ore removal dam body 11 or referred to as ore removal barricade.
The back production of trapezoidal article points 13 carries out filling after terminating, and then carries out continuous stoping (article points inclination angle, the width of Inclined strips 14
Degree determines according to factors such as ore-rock situation, strength of filling mass, filling cost, the requirements of Secondary ore dilution rate).
2nd, after adopting, cutting engineering construction, goaf across pitch section is parallelogram, and a width of article points thickness is (general
If
It is calculated as 5m), a height of article points height (being typically designed as 15m), goaf capwise section is parallelogram, wide
For orebody thickness (being typically designed as ＞ 10m), a height of article points height (being typically designed as 15m).
Now, goaf top plate (having carried out suspension roof support), disk and stripping recovery scar (non-supporting) all have on ore body
Loosen
Lump, there is inbreak hidden danger, therefore, carrying out the stope including scraper ore removal and bottom reinforced-bar binding
Need before prune job to take following anti-inbreak measure.
The 3rd, protective air-bag is set, described protective air-bag and Inclined strips 14 upper lower burrs be fully contacted (i.e. bag width >=
5m),
, close to ore body width (need to retain return air channel), protective air-bag height and the width are equivalently-sized for protective air-bag length,
For ease of installing and reclaiming, protective air-bag is divided into multiple.
Described protective air-bag is shaped as the slightly wider cuboid in top, point inside and outside two layers, and outer layer is high tensile strength fibrous material
Make
Capsule overcoat 5, the storage gas inner bag 7 that internal layer is made for macromolecule vinyl material, capsule overcoat 5 and storage gas inner bag
7 shapes are consistent, store gas inner bag 7 surface area and are slightly larger than capsule overcoat 5, store simultaneously gas inner bag 7 can just with taking-up, can change
With maintenance.For ensureing that protective air-bag is shaped as approximate cuboid, flexible limit for length is installed inside gas inner bag 7 along its length draws storing
Rope.
In the upper end of protective air-bag, the pressure wind gas tube 3 with pressure air valve is installed, presses the inner of wind gas tube 3 and store gas
Inner bag 7 communicates, and calms the anger pipeline for connection in outer end.The hanging rope hook 2 being separately installed with four drift angles of protective air-bag, described
Hanging rope hook 2 hangs on (installs hanging when carrying out article points roofbolt 1 supporting on the anchor-rod tray of article points roofbolt 1 in advance
Rope hook 2).The lower end of protective air-bag is provided with the drain pipe 8 of drain valve, is respectively mounted at lower end four base angle of protective air-bag
There is regulation drawstring 9.
Protective air-bag is pressure-bearing utensil, and bearing strength >=1mpa is it is allowed to small amounts of gases leaks.
Required according to setting height(from bottom), adjust the lifting rope length of hanging rope hook 2.Adjust drawstring 9 adjustment air bag position by pulling
Put.
Pressure wind gas tube 3 outer end is connected with pipeline of calming the anger, and opens the pressure air valve on pressure wind gas tube 3, using stope chisel
Calm the anger in rock pressure wind direction protective air-bag.Air bag is full of calms the anger, after scraper prune job area 10 is formed with effective protection, you can carry out
The operations such as stope scraper cleaning.
During calming the anger into protective air-bag, the water remaining in stope rock drilling compressed-air system can enter air bag, therefore exists
The inflation initial stage opens the drain valve on drain pipe 8, closes drain valve after water base emptying.
When carrying out stope prune job, for the potential safety hazard avoiding gasbag pressure decline to lead to, air valve is pressed to be in often
Open state.
After the completion of stope prune job, close the pressure air valve on pressure wind gas tube 3, open the drain valve on drain pipe 8
Draining, removes pipeline, takes hanging rope hook 2, protective air-bag is packed up, preserves nearby, recycle.
Stope roof Pumex 4 falls after coming off on protective air-bag without falling into scraper prune job area 10, protects simultaneously
Air bag both sides withstand on Inclined strips upper lower burrs wall, it is to avoid upper disk and two help Pumex 6 come off it is ensured that in stope stope clear
The safety of reason operation operation.
Claims (4)
1. Medium-long hole mining method Stope roof and two help Pumex inbreak prevention method and control method it is characterised in that: cutting adopt
Connection and cutting are adopted after connection internal cutting return air raise (12) engineering terminates, and cutting is adopted with connection carry out wall caving and bear down on one trapezoidal, bear down on one knot
Shu Hou, carries out cementing slurry placement and connects trapezoidal article points ore removal dam body (11) of top formation；Wear arteries and veins along ore removal to construct one to both sides
Or several ore removals along the pulse to trapezoidal article points ore removal dam body (11) and with cut return air raise (12) insertion；Lane is cut in construction rock drilling, goes forward side by side
The back production preparation of the trapezoidal article points of row (13) and stoping operation；The back production of trapezoidal article points (13) carries out filling after terminating, and is then inclined
The tiltedly continuous stoping of article points (14)；After adopting, cutting engineering construction, goaf across pitch section is parallelogram, Kuan Weiti
Shape article points (13) thickness, highly, goaf capwise section is parallelogram to a height of trapezoidal article points (13), a width of ore body thickness
Degree, a height of trapezoidal article points (13) are highly；Protective air-bag is now set；Described protective air-bag is abundant with Inclined strips (14) upper lower burrs
Contact, close to ore body width, protective air-bag height and the width are equivalently-sized for protective air-bag length；Described protective air-bag is shaped as
The slightly wider cuboid in top, point inside and outside two layers, outer layer is capsule overcoat (5), and internal layer is to store gas inner bag (7), capsule overcoat
(5) consistent with storing gas inner bag (7) shape, store gas inner bag (7) surface area and be slightly larger than capsule overcoat (5)；Upper in protective air-bag
Pressure wind gas tube (3) with pressure air valve is installed at end, and the inner of pressure wind gas tube (3) communicates with storing gas inner bag (7)；Protection gas
The hanging rope hook (2) being separately installed with four drift angles of capsule, described hanging rope hook (2) hangs on article points roofbolt (1)
On anchor-rod tray, at lower end four base angle of protective air-bag, it is separately installed with the regulation drawstring (9) for adjusting balloon positions；To press
Wind gas tube (3) outer end is connected with pipeline of calming the anger, and opens the pressure air valve in pressure wind gas tube (3), presses wind using stope rock drilling
Calm the anger into protective air-bag；Air bag is full of calms the anger, and scraper prune job area (10) is formed after effectively protecting, carries out including scraper
Ore removal and bottom reinforced-bar binding are in interior stope prune job.
2. Medium-long hole mining method Stope roof according to claim 1 and two helps Pumex inbreak prevention method and controlling party
Method it is characterised in that: the lower end of protective air-bag is provided with the drain pipe of drain valve (8)；Into protective air-bag, the inflation initial stage beats
The drain valve beginning to rehearse on water pipe (8), closes this drain valve after water base emptying.
3. Medium-long hole mining method Stope roof according to claim 1 or claim 2 and two helps Pumex inbreak prevention method and controlling party
Method it is characterised in that: when carrying out stope prune job, pressure air valve be in normally open.
4. Medium-long hole mining method Stope roof according to claim 1 or claim 2 and two helps Pumex inbreak prevention method and controlling party
Method it is characterised in that: gas inner bag (7) is internal to install flexible limit for length's drawstring along its length storing, in order to for ensureing protective air-bag
It is shaped as approximate cuboid.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510302693.4A CN104963688B (en) | 2015-06-06 | 2015-06-06 | Prevention and control method for falling of pumice at roof and two slopes of stope in medium-long hole mining |
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| CN201510302693.4A CN104963688B (en) | 2015-06-06 | 2015-06-06 | Prevention and control method for falling of pumice at roof and two slopes of stope in medium-long hole mining |
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| CN104963688B true CN104963688B (en) | 2017-01-18 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106884674B (en) * | 2017-03-09 | 2019-10-11 | 山东黄金矿业(莱州)有限公司焦家金矿 | False lane construction systems and construction method |
| CN108798768A (en) * | 2018-05-21 | 2018-11-13 | 金川集团股份有限公司 | A method of using recyclable air bag come reservation of filling small well |
| CN109026003B (en) * | 2018-07-09 | 2021-04-20 | 中南大学 | Continuous mining method of spiral auger mining machine for gently inclined extremely-thin vein soft rock ore body |
| CN109519191A (en) * | 2018-10-19 | 2019-03-26 | 太原理工大学 | A method of prevent fully-mechanized mining working from withdrawing stage adjusting lane excessive deformation |
| CN113530540A (en) * | 2021-08-03 | 2021-10-22 | 北京科技大学 | Method for reducing dilution in ore body exploitation |
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| CN103500528A (en) * | 2013-09-22 | 2014-01-08 | 安徽理工大学 | Simulation system model for demonstrating coal mining and roof dynamic changes |
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Patent Citations (5)
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|---|---|---|---|---|
| CN101082282A (en) * | 2007-06-24 | 2007-12-05 | 金川 | Movable coal mine fully-mechanized mining working faces end head plugging air bag for safety |
| CN201090249Y (en) * | 2007-07-27 | 2008-07-23 | 安徽省皖北煤电集团有限责任公司祁东煤矿 | Corner plugging air-bag of high firedamp coal face |
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Inventor after: Chen Yumin Inventor after: Ma Yunqing Inventor after: Wang Ruixing Inventor after: Wang Hui Inventor after: He Shunbin Inventor after: Li Wei Inventor after: Du Fei Inventor before: Ma Yunqing Inventor before: Wang Ruixing Inventor before: Wang Hui Inventor before: He Shunbin Inventor before: Li Wei Inventor before: Du Fei |
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Effective date of registration: 20170330 Address after: 250101 Shandong Province, Ji'nan City Shun Road No. 2000 Shun Tai Plaza No. 3 Patentee after: Shandong Gold Group Co., Ltd. Patentee after: Sanshandao Gold Mine, Shandong Gold Mining (Laizhou) Co., Ltd. Address before: Laizhou Sanshandao streets in Sanshandao Gold Mine 261442 Shandong city of Yantai Province Patentee before: Sanshandao Gold Mine, Shandong Gold Mining (Laizhou) Co., Ltd. |